Data Sheet

32
Atmel | SMART SAM D21 [DATASHEET]
Atmel-42181G–SAM-D21_Datasheet–09/2015
Table 9-5. NVM Software Calibration Area Mapping
9.3.3 Serial Number
Each device has a unique 128-bit serial number which is a concatenation of four 32-bit words contained at the following
addresses:
Word 0: 0x0080A00C
Word 1: 0x0080A040
Word 2: 0x0080A044
Word 3: 0x0080A048
The uniqueness of the serial number is guaranteed only when using all 128 bits.
Bit Position Name Description
2:0 Reserved
14:3 Reserved
26:15 Reserved
34:27 ADC LINEARITY ADC Linearity Calibration. Should be written to CALIB register.
37:35 ADC BIASCAL ADC Bias Calibration. Should be written to CALIB register.
44:38 OSC32K CAL OSC32KCalibration. Should be written to OSC32K register.
49:45 USB TRANSN USB TRANSN calibration value. Should be written to PADCAL register.
54:50 USB TRANSP USB TRANSP calibration value. Should be written to PADCAL register.
57:55 USB TRIM USB TRIM calibration value. Should be written to the PADCAL register.
63:58 DFLL48M COARSE CAL DFLL48M Coarse calibration value. Should be written to DFLLVAL register.
73:64 DFLL48M FINE CAL DFLL48M Fine calibration value. Should be written to DFLLVAL register.
127:74 Reserved